Be careful of Craigslist right now... lots of scamming going on where you'll spot something affordable, call them and the first thing you are asked before even viewing the rental is to fill out an application over the phone...including your SS# for a credit check!! DON'T DO THAT!!!
http://www.trulia.com (Rentals Section)
http://www.zillow.com (Rentals Section)
http://www.realtor.com (Rentals Section)
Between all of those, you will get a very clear picture if you can find what you are looking for. Good luck!